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An hydraulic arm works to your advantage it uses water to do jobs that are difficult to us humans.

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What is hydraulic pressure?

Hydraulic pressure is the force exerted by a hydraulic fluid within a hydraulic system. It is created when a pump pushes the fluid through valves, hoses, and actuators, resulting in a mechanical force that can be used to perform work. Hydraulic systems are commonly used in machinery and equipment that require precise control and high power output.


How will the work done on the input piston compare to the work done by the output piston in a hydraulic device?

In a hydraulic device, the work done by the input piston will be equal to the work done by the output piston if the system is ideal and there are no energy losses due to friction or other factors. This is based on the principle of conservation of energy in a closed system.


Would a hydraulic hoist still work as well if the fluid was replaced with air?

No, a hydraulic hoist would not work as well with air instead of fluid. Hydraulic systems rely on the incompressibility of liquids to transfer pressure and lift heavy loads. The compressibility of air would reduce the system's efficiency and lifting capacity.


In a hydraulic system the pressure on the large piston is the pressure on the small piston.?

In a hydraulic system, the pressure is the same throughout the system, so the pressure on the large piston is equal to the pressure on the small piston. This principle is known as Pascal's Law and is a key concept in understanding how hydraulic systems work.


Why do hydraulic systems only work with liquids not gases?

Hydraulic systems rely on the incompressibility of liquids to transmit force effectively. Gases are compressible, which would lead to fluctuations in pressure and an inconsistent transmission of force in a hydraulic system. Liquids offer more predictable and stable performance for hydraulic applications.